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@article{MV_1971_23_1_a42, author = {M. A. Wotulo}, title = {One new kind of irregular spectra}, journal = {Matemati\v{c}ki vesnik}, pages = {357 }, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1971}, url = {http://geodesic.mathdoc.fr/item/MV_1971_23_1_a42/} }
M. A. Wotulo. One new kind of irregular spectra. Matematički vesnik, Tome 23 (1971) no. 1, p. 357 . http://geodesic.mathdoc.fr/item/MV_1971_23_1_a42/